All Key assignments:
(spamming) the "Spacebar" or "Enter" = to break up locked doors.
"Spacebar" or "Enter" = open a normal doors.
"W,A,S,D" or "Arrowkeys" = walking.
"ESC" or "Backspace" = open or close the menu.
"F11" = switch in 5 different size options.
"F9" = Safety mode...
(use the safety mode only by very strong lags to turn your game in a safe framerate! You can turn back your default Framerate in the options of the "ESC" menu...)